Philosophy Slam http://www.philosophyslam.org/index.html
Philosophical forum for kids designed to inspire kids to think and to unlock their creative and intellectual potential. Lots of interactive, hands-on resources. Check out the Philosopher of the Week section!

Northwest Center for Philosophy for Children http://depts.washington.edu/nwcenter/res/index.php
Lots of resources - literature lists, journal, activities, other links relating to philosophy for kids.

Some Active Alternatives to Reading in Philosophy for Children http://depts.washington.edu/nwcenter/res/act/index.php</span
Great paper on how to get middle school students who don't like to read philosophizing about moral questions. This can also be reached from the above link, but I didn't want anyone to miss it.

Tragedy of the Rabbits Game - Use of common resources http://www.bunnygame.org/about.htm